DC Boiler Operator Practice Questions - District Of Columbia Boiler Operator Licensing Exam

What safety precaution is required before entering a boiler for inspection?

Turn off burner only Lock out/tag out all energy sources, cool, drain, and ventilate the boiler Drain halfway and enter Reduce pressure to 5 psi

Correct Answer:

Lock out/tag out all energy sources, cool, drain, and ventilate the boiler

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